michael_phlin_jahapne Posted July 31, 2003 Share Posted July 31, 2003 It seems to me that straight-line films (as oppsed to those with more of a shoulder) would be better for platinum, as they will not compress in the hilights with the added density required for the process. Is this right? Link to comment Share on other sites More sharing options...
william_marderness1 Posted July 31, 2003 Share Posted July 31, 2003 That is right. FP-4+ is a good choice. It has low fog and a straight line. Link to comment Share on other sites More sharing options...
philip_sweeney Posted August 2, 2003 Share Posted August 2, 2003 I agree with William. Check these curves for FP4: <html> <a href="http://home.att.net/~shipale/FP4_BTZS_curves.html">FP4 with PMK and pyrocatHD</a> </body> </html> Notice the PMK 10-20-500 results in a straight line curve whereas the standard PMK dilution 10-20-1000 has a significant shoulder. I think generally standard PMK is good for N- developments, not N+ and I think that's why AZO users (and pt/pd) have problems with standard PMK. I am using pyrocatHD for AZO. Along those lines Sandy King's recent tests indicate to me JandC 200 would be only a little better than FP4 for maximum N+ developments. I am considering HP5 for lower contrast SBRs, but still only use FP4. Link to comment Share on other sites More sharing options...
william_marderness1 Posted August 3, 2003 Share Posted August 3, 2003 Right. You need to use FP-4+ with a developer that will give a straight line. I use DK-50 straight to get the high contrast needed for pt/pd. Link to comment Share on other sites More sharing options...
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